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Thinking Step 3: 推理第二个人。他听到了第一个人的话，推断出第一个人想要。如果第二个人自己不想要，他会说“不”。他说“不知道”，说明他自己也想要，但他不确定第三个人。，推荐阅读快连下载安装获取更多信息
The new contract is set to run for five years and is estimated at £27m, far more than the value of the contract awarded to Crawford in 2021, but still significantly less than the amount paid to it over the course of its agreement.，更多细节参见WPS下载最新地址
Step 2: Route on the Abstract Graph (The "Highway" Part):